Circle shape cutters kit is made of 18/8 commercial grade 304 stainless steel making them strong so they keep their shape, are rust proof, dishwasher safe and tested to be oven safe to 500F degrees. Fully stainless steel Rolled top edges, to protects your fingers during the cutting process. The donuts cutter set has no sharp dangerous seams, and a plain clean edge on the bottom to cut with ease. Biscuit Cutter Set 10 various graduated sizes,Ring Diameters: 1.33 1.8 - 2.2- 2.75 - 3.14 - 3.66 - 4.05 - 4.56 - 5.03 - 5.51, and all are 1.02 -inches high. Biscuit Cutter Set is widely used: including cutting cookies, pastries, dough, fondant, empanadas,crumpets, tarts, canapes,doughnuts, vegetables, English muffins, bread, ravioli pasta . Use it for baking, cooking, frying eggs or making pancakes. The Biscuit Cutter set has a good design package, convenient storage, and make it a perfect gift for any occasion.